I think......
make sure you have something like this in config file

"api-allow" : "W:192.168.1.64,F:23.236.58.114",
"api-groups" : "F:switchpool:addpool:removepool:restart:save:*",

where F is a group named and defined by you (as long as it isnt w) and created by the command "api-groups" and "api-allow" allows the site 23.236.58.114 to access those commands.

W is for open access and usually only for local access on your network

then restart the miner and even the machine if still not working.

dont have the last "," if its the last command in the file though as in ..blah blah..save:*",